> On Wed, 08 Dec 2010 14:36:06 -0700> Bjorn Helgaas <bjorn.helgaas@hp.com> wrote:> > > > > This adds arch_remove_reservations(), which an arch can implement if it> > needs to protect part of the address space from allocation.> > > > Sometimes that can be done by just requesting a resource. This hook is to> > cover cases where protected area doesn't fit well in the hierarchical> > resource tree. For example, x86 BIOS E820 reservations are not related> > to devices, so they may overlap part of, all of, or more than a device> > resource.> > > > Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>> > ---> > Hm, this is bigger than the simple change of just avoiding the high 2M;> Linus have you checked it out yet? It's nicer than simply adjusting> PCIBIOS_MAX_MEM since it will affect all resource callers rather than> just PCI, but it's definitely bigger.> > If you want just the simple change for 2.6.37 I can push that, but> we'll need to get a tested-by from Matthew:> > diff --git a/arch/x86/include/asm/pci.h b/arch/x86/include/asm/pci.h> index ca0437c..aef9f77 100644> --- a/arch/x86/include/asm/pci.h> +++ b/arch/x86/include/asm/pci.h> @@ -141,7 +141,7 @@ void dma32_reserve_bootmem(void);> > /* generic pci stuff */> #include <asm-generic/pci.h>> -#define PCIBIOS_MAX_MEM_32 0xffffffff> +#define PCIBIOS_MAX_MEM_32 0xfff00000> > #ifdef CONFIG_NUMA> /* Returns the node based on pci bus */> > and I'll queue up this set for 2.6.38.> > Thanks,